ZIP Code 01983
High RiskPFAS above EPA limits detected
2 compounds exceed EPA Maximum Contaminant Levels in water serving this ZIP code. Standard pitcher filters like Brita do not remove PFAS. See filter recommendations below.
5
PFAS Detected
2
Above EPA Limits
1
Water System
225%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 225% of limit
Detected: 9.00 ppt
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 135% of limit
Detected: 5.40 ppt
TOPSFIELD WATER DEPARTMENT
MA3298000 High RiskWater Type
Groundwater
PFAS Detected
5
Above MCL
2
State
Massachusetts
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 9.00ppt | 225% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOS Perfluorooctane sulfonic acid | 5.40ppt | 135% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFBS Perfluorobutane sulfonic acid | 4.00ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 3.40ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 3.20ppt | No federal limit | — | Unregulated |
Data source: EPA Unregulated Contaminant Monitoring Rule, 5th cycle (UCMR 5) — January 2026 release.
UCMR 5 tested ~10,000 public water systems serving more than 25 people between 2023-2025 for 29 PFAS compounds.
Detection values represent the highest single-sample result measured at entry points to the distribution system.